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Roof Bolts
Engineered for underground strength and reliability, with multiple configurations, lengths and colour indicators for fast identification.
Diameters20 mm or 22 mm
Lengths0.6 m to 2.4 m
ConfigurationsShear pinned, nibbed, combination
StrengthMinimum yield 400 MPa; tensile minimum 500 MPa
Available lengths & colour indicators
| Nominal length | Colour code | Diameter |
|---|---|---|
| 0.6 ± 5 mm | Orange | 20 / 22 mm |
| 0.9 ± 5 mm | Yellow | 20 / 22 mm |
| 1.2 ± 5 mm | Blue | 20 / 22 mm |
| 1.5 ± 5 mm | White | 20 / 22 mm |
| 1.8 ± 5 mm | Green | 20 / 22 mm |
| 2.1 ± 5 mm | Red | 20 / 22 mm |
| 2.4 ± 5 mm | Pink | 20 / 22 mm |
Other diameters and lengths are available on request.
Roof bolt configurations
Shear pinned
Fitted with a shear pin that breaks at a predetermined load, allowing the bolt to yield and maintain support.
Nibbed
The nib grips the plate and prevents rotation, enhancing load transfer and stability.
Combination
Combines shear-pinned and nibbed features for added performance and safety.
Technical specifications
- Diameter: 20 mm or 22 mm
- Steel grade options: SAE 1020 / 1026 / 1035; S355JR / S460J (EN standards); high tensile steel
- Finish: black / self-colour / galvanized
- Thread: right-hand thread
- Thread length: standard 140 mm (±10 mm)
- Rib pattern: high rib for improved bond
- Tensile strength: minimum 500 MPa
- Yield strength: minimum 400 MPa
- Elongation: minimum 14%
Components & applications
Components
- Washer plates with washer plate attached
- Torque indicators in various configurations
- Nuts and related accessories
Ideal for
- Mining
- Construction
- Tunnelling
- Civil engineering
- Slope support
Product literature
Related brochure pages
Open the attached Avocan brochure pages directly from the website.
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